When all else fails, read the instructions.

Form 1040 Instructions, Page 56

Generally, you are eligible to claim
the recovery rebate credit if in 2020 you
were a U.S. citizen or U.S. resident alien,
weren't a dependent of another taxpayer,
and have a valid social security
number. This includes someone who
died in 2020, if you are preparing a return
for that person.